Cage/Tubs/Build/Buy?

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Here it is:
My yearling male boas will be reaching 4ft soon and wanted to start preparing for their permanent home. I keep my male boas under 5-1/2ft by regulating their feeding, no I don't starve them in anyway!

I purchased two plastic bins last Christmas at a Wholesale store here in Florida called BJ's.
They are about 42" X 24" X 10", I should've bought 8 or 10 of them! Problem is I tore the labels off these when I bought them and can't seem to find anything like these anywhere.

Any ideas where I can find some plastic tubs in this size? All the tubs out there are either too narrow 18" or too short 5"-6". I would like to find something at least 36" X 24" X 10"-12" tall for about 7 male boas. I don't want to build or buy any cages for these yet and was hoping to get by on some Rubbermaid or sterilite or brand X tubs.

I plan on redoing my reptile room in due time with Plastic cages, but I want to plan ahead.

I checked out most reptile tub suppliers and their widest is only 20-7/8", I would like something 24" wide and 9" - 12" deep. I know there are some clear tubs out there in the size range I'm looking for, I just need to find them.

As a semi last resort I may look at building some cages or as a last resort just buy the Plastic cages.

Problem is, Plastics is a bit more $$$ than I feel I need to spend at the moment, I would need about 7 and at that price it would be about $200.00 each w/shipping from the usual suppliers. That's $1,400 for 7 = 36" X 24" X 12" enclosures!

A plastic tub of that size would cost me about $10-$15 maybe less and I could build a rack for less than $100. The cost for that option would be $185-$200 total w/the tubs, if I could only find them!

Building these 7 enclosures out of Melamine with sliding Plexiglas doors would cost me about $550-$600 building it myself. I've done these before and it's not that tough, problem is in the long run I want to upgrade to plastic and wouldn't want to spend the money twice.

My first and obvious choice would be a rack system, second I am caught between cost and a decision to switch my reptile room to plastic in the long run. I would like something in the interim/quick solution to give me another 1-1/2 - 2 years.

I also just read that I still have to build some of these plastic cages when they arrive, since they are shipped unassembled. I was under the impression plastic cages were molded/seamless and were made in one piece.

$1,400 for some cages that I still have to build isn't looking as good anymore, I wanted a one piece Plastic enclosure like the Vision cages I've seen.

Any suggestions?
Sorry for the long post!